// Student.java (Immutable)
public class Student {
    private final String name;
    private final int preferredQuantity;
    private final PaperType preferredType;

    public Student(String name, int preferredQuantity, PaperType preferredType) {
        this.name = name;
        this.preferredQuantity = preferredQuantity;
        this.preferredType = preferredType;
    }

    public String getName() {
        return name;
    }

    public int getPreferredQuantity() {
        return preferredQuantity;
    }

    public PaperType getPreferredPaperType() {
        return preferredType;
    }
}

